The former Australia manager says it will be difficult to gauge how good Leicester are until the new season starts.
“To understand the league, you have to go out there and compete against other teams,” he said.
Sheikha, who led Irish side Leinster to victory in the European Champions Cup against new clubs in 2009, will take charge in his first away game against Exeter Chiefs on September 21.
He added: “I played in the Premier League with Celtic and now I’m at URC, Top 14 and I haven’t really got the hang of it yet. Now I want to get the hang of it in the Premier League.”
